Prince Brings Out Kendrick Lamar During Album Release Party Livestream

They perform "What's My Name"

Last night, Prince threw a Yahoo-sponsored record release party to celebrate his two new albums, Art Official Age and PlectrumElectrum (the latter recorded with his band 3rdEyeGirl). During his performance, he brought out Kendrick Lamar to perform "What's My Name", a rarity from 1998's CrystalBall box set. You can watch a short clip of Kendrick's appearance below—or, if you're more intrepid and don't mind waiting, you can sit through about fifteen minutes of the pre-recorded live stream until he comes out. (Sorry, no fast-forwarding; Prince remains apparently committed to eschewing technological convenience.) Update (5/3/16, 5:37 p.m. ET): Footage of Prince and Kendrick performing together at this show has resurfaced after being unavailable for months. Watch it here via Complex: